1126811331 has 20 divisors (see below), whose sum is σ = 1756449552. Its totient is φ = 718545168.

The previous prime is 1126811317. The next prime is 1126811341. The reversal of 1126811331 is 1331186211.

It is not a de Polignac number, because 1126811331 - 2⁵ = 1126811299 is a prime.

It is a super-2 number, since 2×1126811331² = 2539407551339983122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1126811295 and 1126811304.

It is not an unprimeable number, because it can be changed into a prime (1126811341) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 300556 + ... + 304281.

Almost surely, 2^1126811331 is an apocalyptic number.

1126811331 is a deficient number, since it is larger than the sum of its proper divisors (629638221).

1126811331 is an equidigital number, since it uses as much as digits as its factorization.

1126811331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604872 (or 604863 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1126811331 is about 33568.0105308611. The cubic root of 1126811331 is about 1040.5997930101.

Adding to 1126811331 its reverse (1331186211), we get a palindrome (2457997542).

The spelling of 1126811331 in words is "one billion, one hundred twenty-six million, eight hundred eleven thousand, three hundred thirty-one".